Fund scale refers to the total market value of funds, and funds refer to a certain amount of funds established for a certain purpose, mainly including trust and investment funds, provident funds, insurance funds, retirement funds and various foundations. Accounting funds refer to funds with specific purposes and uses, while funds mainly refer to securities investment funds. According to different organizational forms, funds can be divided into corporate funds and contractual funds. A fund is established by issuing fund shares to establish an investment fund company, which is usually called a corporate fund; The establishment of fund managers, fund custodians and investors through fund contracts is usually called contractual funds.